community.general proxmox_kvm "Linked clone feature is not supported for drive" when creating template

Summary

Using community.general.proxmox_kvm to create VM, then converting to template, when cloning VM and using "linked clone", get error Linked clone feature is not supported for drive 'scsi0' (500).

This issue was previously reported and presumably fixed, or maybe not fixed, see: [https://github.com/ansible/ansible/issues/44950]
Unfortunately it seems the PR is no longer available to look at.

There is no workaround as using ansible.builtin.command: "qm template {{ item.id }}" instead, it results in qm returning a 25 error code, but running the same qm template 9001 command from the console works.
I have no idea why qm sometimes fails with error 25, see here, here, and here with no solution yet.

Issue Type

Bug Report

Component Name

proxmox_kvm

Ansible Version

$ ansible --version
ansible [core 2.15.2]
  config file = None
  configured module search path = ['/home/pieter/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.9/dist-packages/ansible
  ansible collection location = /home/pieter/.ansible/collections:/usr/share/ansible/collections
  executable location = /usr/local/bin/ansible
  python version = 3.9.2 (default, Feb 28 2021, 17:03:44) [GCC 10.2.1 20210110] (/usr/bin/python3)
  jinja version = 3.0.1
  libyaml = True

Community.general Version

$ ansible-galaxy collection list community.general

# /home/pieter/.ansible/collections/ansible_collections
Collection        Version
----------------- -------
community.general 7.2.1  

# /usr/local/lib/python3.9/dist-packages/ansible_collections
Collection        Version
----------------- -------
community.general 7.2.0

Configuration

$ ansible-config dump --only-changed
CONFIG_FILE() = None

OS / Environment

Proxmox 7.4-16

Steps to Reproduce

---
# Create Cloud-Init VM templates
# https://pve.proxmox.com/wiki/Cloud-Init_Support

# TODO:
# Fix locked images: sudo qm destroy 9001 --destroy-unreferenced-disks 1 --skiplock 1
# https://forum.proxmox.com/threads/creating-cloud-images-using-ansible-fails-while-the-same-commands-work-in-the-shell.131571/
# https://stackoverflow.com/questions/76816367/creating-cloud-init-images-on-proxmox-using-ansible-shell-command-fails-while-s
# https://www.reddit.com/r/ansible/comments/15gocqj/problem_when_using_ansible_to_configure_cloudinit/

# https://docs.ansible.com/ansible/latest/modules/file_module.html
- name: "Create disk images directory"
  file:
    path: "{{ item }}"
    state: directory
    mode: "ugo+rwx"
    owner: nobody
    group: users
    recurse: true
  with_items:
    - "{{ cloud_init_dir }}"

# Read the host SSH trusted keys into a variable
- name: "Read trusted public SSH keys"
  ansible.builtin.slurp:
    src: "{{ cloud_init_ssh_keys }}"
  register: ssh_keys_encoded

# https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_blocks.html
- name: "Create Cloud-Init VM templates"
  block:
    # Download cloud images
    # https://docs.ansible.com/ansible/latest/collections/ansible/builtin/get_url_module.html
    - name: "Download cloud image"
      # Re-create the VM templates when the downloaded image changed
      register: download
      get_url:
        url: "{{ item.url }}"
        dest: "{{ item.file }}"
        mode: "ugo+rwx"
        owner: nobody
        group: users
        timeout: 120
      with_items: "{{ images }}"

    # Copy cloud image to disk file, make modifications to copy not original download
    - name: "Copy cloud image"
      when: download.changed
      ansible.builtin.copy:
        src: "{{ item.file }}"
        dest: "{{ item.disk }}"
        mode: "ugo+rwx"
        owner: nobody
        group: users
      with_items: "{{ images }}"

    # Resize using qemu-img to avoid need for using qm set after VM is created
    - name: "Resize disk image"
      when: download.changed
      ansible.builtin.command: "qemu-img resize {{ item.disk }} 8G"
      with_items: "{{ images }}"

    # TODO: Use snippets: https://forum.proxmox.com/threads/combining-custom-cloud-init-with-auto-generated.59008/page-3
    # Install guest agent in disk image
    - name: "Install guest agent in disk image"
      when: download.changed
      ansible.builtin.command: "virt-customize -a {{ item.disk }} --install qemu-guest-agent"
      with_items: "{{ images }}"

    # Destroy the VM, only if a new image was downloaded
    # https://docs.ansible.com/ansible/latest/collections/community/general/proxmox_kvm_module.html
    - name: "Destroy VM"
      # when: download.changed
      community.general.proxmox_kvm:
        api_user: "{{ proxmox_api_user }}"
        api_token_id: "{{ proxmox_api_token }}"
        api_token_secret: "{{ proxmox_api_secret }}"
        api_host: "{{ inventory_hostname }}"
        node: "{{ inventory_hostname_short }}"
        vmid: "{{ item.id }}"
        state: "absent"
      with_items: "{{ images }}"

    - name: "Create VM"
      # when: download.changed
      community.general.proxmox_kvm:
        api_user: "{{ proxmox_api_user }}"
        api_token_id: "{{ proxmox_api_token }}"
        api_token_secret: "{{ proxmox_api_secret }}"
        api_host: "{{ ansible_host }}"
        node: "{{ ansible_hostname }}"
        vmid: "{{ item.id }}"
        name: "{{ item.name }}"
        tags: "{{ item.tags }}"
        memory: 4096
        cores: 2
        net:
          net0: "virtio,bridge=vmbr1"
        ipconfig:
          ipconfig0: "ip=dhcp"
        scsihw: "virtio-scsi-pci"
        ide:
          ide2: "vmdata:cloudinit"
        ciuser: "{{ cloud_init_user }}"
        cipassword: "{{ cloud_init_password }}"
        searchdomains: "{{ cloud_init_domain }}"
        sshkeys: "{{ ssh_keys_encoded.content | b64decode | trim }}"
        ostype: "l26"
        agent: "enabled=1,fstrim_cloned_disks=1"
        onboot: false
        state: "present"
      with_items: "{{ images }}"

    # TODO: Import-from does not work as part of create: "Only root can pass arbitrary filesystem paths"
    - name: "Import disk to VM"
      # when: download.changed
      ansible.builtin.command: "qm set {{ item.id }} --scsi0 vmdata:0,import-from={{ item.disk }} --boot order=scsi0"
      with_items: "{{ images }}"

    # TODO: Update to template does not work: "Linked clone feature is not supported for drive 'scsi0' (500)"
    # https://github.com/ansible/ansible/issues/44950
    # sudo qm template 9001
    - name: "Convert VM to template"
      # when: download.changed
      community.general.proxmox_kvm:
        api_user: "{{ proxmox_api_user }}"
        api_token_id: "{{ proxmox_api_token }}"
        api_token_secret: "{{ proxmox_api_secret }}"
        api_host: "{{ ansible_host }}"
        node: "{{ ansible_hostname }}"
        vmid: "{{ item.id }}"
        template: true
        update: true
      with_items: "{{ images }}"

    # TODO: Error 25
    # - name: "Convert VM to template"
    #   # when: download.changed
    #   ansible.builtin.command: "qm template {{ item.id }}"
    #   with_items: "{{ images }}"

  vars:
    images:
      - {
          id: "9001",
          name: "ubuntu-jammy-template",
          tags: [ "ubuntu", "jammy", "cloud-image" ],
          file: "{{ cloud_init_dir }}/jammy-server-cloudimg-amd64.img",
          disk: "{{ cloud_init_dir }}/jammy-server-cloudimg-amd64-disk.img",
          url: "https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-amd64.img",
        }
      - {
          id: "9002",
          name: "debian-bookworm-template",
          tags: [ "debian", "bookworm", "cloud-image" ],
          file: "{{ cloud_init_dir }}/debian-12-genericcloud-amd64.qcow2",
          disk: "{{ cloud_init_dir }}/debian-12-genericcloud-amd64-disk.qcow2",
          url: "https://cloud.debian.org/images/cloud/bookworm/latest/debian-12-genericcloud-amd64.qcow2",
        }